Product Info

Manufacturer Description

It's easy...just grab a Bob's Knob collimation thumbscrew and turn. You can even do it while looking through the eyepiece on most scopes. These thumbscrews are also much easier to use with gloves on. And perhaps most importantly, you'll never drop that pesky little Allen wrench or screwdriver into the grass again. Installation is a snap with the included instructions, and you can undo the modification at any time.

Part: AT10RCFits: Astro-Tech, GSO and Orion 10" RC secondary.

Knobs: Black plastic, 16 mm (5/8") diameterThreads: Stainless steel

Notes:
1. The factory dust cover may contact the knobs when installed, but the cover will remain in place. If desired, a shower cap can be used as a substitute cover.